Wifi setup>>I need help(Recommendations)

I am about to set up a wifi network that would run for about 5km and would enable about 300 users to connect for highspeed internet access. please i need recommendation on the type of equipmenst to use and the amount of bandwidth to purchas I will be very grateful if anybody can help me.

WiFi does not have such a range normally. In any case, you will need a number of bridges/repeaters. You can send from one repeater to another over a long distance using a Yagi-Uda directional antenna. I've used them in the past to bridge local WiFi transmitters over a distance of 100's of yards to over a kilometer. Bear in mind that you may well violate federal (FCC) power limits using this technology!

Exactly what the 'rubberman' said. When you asked this question i was surprized that how can we get the wi-fi routers or access points of such a huge range. Well, deploying boosters will surely help you.

Yagi-Uda antennas are truly awesome! Because of their tight directionality, they don't usually interfer with other radio transmitters/receivers. I taught a class once where we used one to link two facilities via WiFi that were over 1/2 mile (a kilometer) apart. The signal loss was negligible, and both facilities have "seamless" connectivity to the internet. One had the physical broadband connection, and the other did not. A colleague of mine uses these antennas to connect his house in Hawaii to a cell tower (with a nano-cell) so he can get cell coverage out in the boondocks where otherwise it would just be "dark country".